520017875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{320011}}^1$

素因数の和:320039

約数の個数: 16

約数和(自身を含む): 698906208

約数和(自身を除く): 178888333

約数列:

[1, 5, 13, 25, 65, 125, 325, 1625, 320011, 1600055, 4160143, 8000275, 20800715, 40001375, 104003575, 520017875]

約数ペア:

[(1, 520017875), (5, 104003575), (13, 40001375), (25, 20800715), (65, 8000275), (125, 4160143), (325, 1600055), (1625, 320011)]